<?php

/**
 * BackendLoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SitebackendController'.
 */
class BackendLoginForm extends CFormModel
{
    public $email;
    public $password;
    public $rememberMe;

    private $_identity;

    /**
     * Declares the validation rules.
     * The rules state that email and password are required,
     * and password needs to be authenticated.
     */
    public function rules()
    {
        return array(
            // email and password are required
            array('email, password', 'required'),
            // rememberMe needs to be a boolean
            array('rememberMe', 'boolean'),
            // password needs to be authenticated
            array('password', 'authenticate'),
            // email must be an email
            array('email', 'email'),
        );
    }

    /**
     * Declares attribute labels.
     */
    public function attributeLabels()
    {
        return array(
            'rememberMe'=>Yii::t('main', 'Запомнить меня'),
            'email'=>Yii::t('main', 'E-mail'),
            'password'=>Yii::t('main', 'Пароль'),
        );
    }

    /**
     * Authenticates the password.
     * This is the 'authenticate' validator as declared in rules().
     */
    public function authenticate($attribute, $params)
    {
        if(!$this->hasErrors())
        {
            $this->_identity = new BackendUserIdentity($this->email, $this->password);
            if(!$this->_identity->authenticate())
                $this->addError('password', Yii::t('main', 'Неверный e-mail или пароль.'));
        }
    }

    /**
     * Logs in the user using the given username and password in the model.
     * @return boolean whether login is successful
     */
    public function login()
    {
        if($this->_identity===null)
        {
            $this->_identity=new BackendUserIdentity($this->email, $this->password);
            $this->_identity->authenticate();
        }
        if($this->_identity->errorCode===BackendUserIdentity::ERROR_NONE)
        {
            $duration=$this->rememberMe ? 3600*24*30 : 0; // 30 days
            Yii::app()->user->login($this->_identity, $duration);
            return true;
        }
        else
            return false;
    }
}
